<template>
  <div>
    <!-- 商品列表界面 -->
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="150px">
          <template slot-scope="scope">
            <!-- 调用时间过滤器 -->
            {{scope.row.add_time | dateFormat}} 
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum" :page-sizes="[5, 8, 10,15]"
                     :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper"
                     :total="total" background> 
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "List",
  data() {
    return {
      //查询的参数对象
      queryInfo:{
        //查询参数
        query:'',
        //当前页码
        pagenum:1,
        //每页显示的信息条数
        pagesize:5
      },
      //商品列表
      goodsList:[],
      //数据总条数
      total:0
    };
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    //根据分页获取对应的商品列表
    async getGoodsList() {
      const {data} = await this.$http.get('goods',{params:this.queryInfo})
      if(data.meta.status !== 200) {
        return this.$message.error('获取商品列表失败!');
      }
      // this.$message.success('获取商品列表成功!')
      // console.log(data.data);
      this.goodsList = data.data.goods
      this.total = data.data.total
    },
    //处理每页显示的信息条数
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    //当前页码值发生变化
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    //根据ID删除对应项
    async removeById(id) {
      const confirmRes = await this.$confirm('此操作将永久删除该商品名称, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if(confirmRes !== 'confirm') {
        return this.$message.info('已取消删除操作!')
      }
      const {data} = await this.$http.delete('goods/'+id)
      if(data.meta.status !== 200) {
        this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getGoodsList()
    },
    //添加商品事件
    goAddPage() {
      this.$router.push('/goods/add')
    }
  }
};
</script>

<style scoped>
</style>